Inking mechanism for printing presses



April 18, 1939. T. M. AVERY INKING MECHANISM FOR PRINTING PRESSESOriginal Filed Dec. 12, 1936 2 Sheets-Sheet 1 mv MY April 18, 1939. T.M. AVERY INKING MECHANISM FOR PRINTING PRESSES Original Filed Dec. 12,1936 2 Sheets-Sheet 2 Fae/f Snow ms Patented Apr. 18, 1939 UNITED STATESPATENT OFFICE.

INKING MECHANISM FOR PRINTING PRESSES True M. Avery, Glens Falls, N. Y.,assignor to Union Bag & Paper Corporation, Hudson Falls, N. Y., acorporation of New Jersey 1 Claim.

The present invention relates to improvements in printing presses, andmore especially to those of the class adapted to print on a continuoustravelling web of paper or other material, the present application beinga division of my prior application Serial No. 115,622 filed December 12,1936.

The primary object of the present invention is to provide novel andimproved means for vibrating or reciprocating an inking roller axiallyrelatively to other distributing rollers of an inking mechanism foruniformly distributing the ink along the lengths of such rollers andthereby insuring uniform printing by the type roller to which suchrollers sup-ply the ink.

In the accompanying drawings:-

Figure 1 is a top plan view of a portion of a printing press, showing aninking roller provided with the vibrating or reciprocating meansaccording to the present invention;

Figure 2 is a section taken on the line 2-2 in Fig. 1;

Figure 3 is a vertical section taken on the line 33 in Fig. 1; and

Figure 4 is a detail vertical section taken on the line 4-4 in Fig. 1.

Similar parts are designated by the same reference characters in thedifferent figures.

The present invention is applicable generally to printing presses of thewell known class wherein a continuous web of paper or other materialtravelling through the press is printed upon by revoluble type rollersor cylinders which are supplied with ink by cooperating inking rollers.A portion of a press of such class is shown in the present instancewherein I and 2 represent the side frame members of the press in whichthe printing and inking rollers may be journalled in the usual or anysuitable way, 3 representing a revoluble type carrying roller orprinting cylinder which prints upon the travelling web, 4 and 5representing a pair of form rollers which transfer the ink to theprinting roller, and 6 representing the inking roller which supplies theink to the form rollers, the inking roller 6 receiving ink from an inkdistributing roller I which, in turn, may receive ink from any suitableor well known form of ink fountain.

According to the present invention, the form rollers I and 5 may bejournalled in bearings 8 supported in brackets 9 which may beconstructed and adjustably clamped to circularly-grooved plates ID onthe side frame members I and-2 by bolts I I as disclosed in detail in myprior application hereinbefore referred to, or in any other suitableway, so that these rollers are revoluble but do not reciprocate axially.The rollers 4 and 5 contact with the type on the printing roller 3 tosupply ink thereto, as will be clear from Fig. 3. The roller 6 may bedriven from the usual train of gearing or other suitable means throughan idler gear I2 which meshes with a gear I3 fixed on the shaft I4 ofthe roller 6. The roller 1 may be journalled in bearings I5 supported insuitable brackets I6 clamped to the side frame members so that thisroller is revoluble but does not reciprocate axially. The rollers i and5 which serve to transfer ink from the inking roller 6 to the printingroller 3 are driven frictionally by contact with the inking roller, andthe roller I may also be driven frictionally from the inking roller 6.

The shaft I4 of the vibratory inking roller 6 is shiftable axially inits bearings, the shaft for this roller being shown as provided withroller bearings the inner races 20 of which are movable axially withrespect to the surrounding series of rollers 2 I, and the driving gearI3 for this vibratory inking roller is movable axially of the respectivedriving gear I2 which is widened so that it will remain in mesh ordriving relation therewith during its reciprocatory movements.

The vibrating means for the roller 6 as shown in detail in Figs. 1 and2, comprises a worm 22 fixed on one end of the shaft I4 of the roller 6,a worm casing 23 journalled on said end of the roller shaft I4 andengaging shoulder 24 on the shaft and a collar 25 fixed on said shaft sothat the worm casing will reciprocate axially with said shaft, a WormWheel 25 (Fig. 4) mounted rotatably in the worm casing on a shaft 21fixed therein, a crank disk 28 fixed to the hub of the worm wheel, acrank pin 29 fixed to the crank disk, and a link 30 pivotally connectedat one end to the crank pin and at its other end to a pivot pin 3iattached to the adjacent side member I of the frame. The worm casing isformed with a lug 32 in which is slidable a pin 33 which is fixed to andprojects outwardly from the adjacent side member of the frame inparallelism with the axis of the shaft I! of the vibratory inkingroller.

Rotation of the inking roller 6 during the operation of the press causesthe worm 22 fixed to the shaft of this roller to rotate the worm wheel25, thereby causing rotation of the disk 28 carrying the crank pin 29.Since this crank pin is pivotally connected to the side frame member Iby the link 30, such rotation of the crank disk will cause the wormwheel casing 23 to reciprocate in a direction toward and from said sideframe member guided by the pin 33, end since the casing 23 is confinedbetween the shoulder 24 and collar 25 on the shaft M of the inkingroller 6 and is held against rotation by the guide pin 33, the inkingroller 6 will be vibrated or reciprocated axially relatively to thecooperating rollers 4, 5 and 1, thereby distributing the ink uniformlyalong the lengths of these rollers and the roller 6 and thus insuringuniform transfer of ink from the rollers 4 and 5 to the printing roller3.

I claim as my invention:

In a printing press comprising a frame, and an inking roller having itsshaft mounted to rotate and reciprocate axially therein, a worm fixed onthe shaft of the inking roller, a casing mounted revolubly but immovablyaxially on the inking roller shaft, said casing being closed at one sideand having an opening in its opposite side, a stud shaft fixed in theclosed side of said casing and projecting into said opening, a wormWheel mounted revolubly on said stud shaft and meshing With said worm,said casing wholly enclosing said Worm and worm wheel and the worm wheelhaving a hub extending outwardly through said opening in the casing, acrank fixed to the exterior end of the hub of said worm wheel, a linkpivotally connected to said crank and to the frame, and a guide pinfixed to the frame and extending parallel to the inking roller shaft andslidably engaging said casing for guiding it.

TRUE M. AVERY.

